1、Designation:D262891(Reapproved 2011)Standard Specification forPreformed Polychloroprene Elastomeric Joint Seals forConcrete Pavements1This standard is issued under the fixed designation D2628;the number immediately following the designation indicates the year oforiginal adoption or,in the case of re
2、vision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1.Scope1.1 This specification cove
3、rs the material requirements forpreformed polychloroprene elastomeric joint seals for concretepavements.The seal consists of a multiple web design andfunctions only by compression of the seal between the faces ofthe joint with the seal folding inward at the top to facilitatecompression.The seal is i
4、nstalled with a lubricant and isdesigned to seal the joint and reject incompressibles.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.
5、1.3This standard does not purport to address the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.NOTE1This specification is a m
6、anufacturing and purchasing specifi-cation only and does not include requirements or considerations forselection of size,or the installation of the joint seals.However,experiencehas shown that successful performance of this product depends upon theproper selection of size and cross-sectional design
7、of the joint seal,jointsize,and joint spacing for the ambient conditions the pavement will beexposed to,and care in the installation of the joint seals.2.Referenced Documents2.1 ASTM Standards:2D395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas
8、-tic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD518 Test Method for Rubber DeteriorationSurfaceCracking(Withdrawn 2007)3D573 Test Method for RubberDeterioration in an AirOvenD575 Test Methods for Rubber Properties in CompressionD1149 Test Methods for Rubber DeteriorationC
9、racking inan Ozone Controlled EnvironmentD2240 Test Method for Rubber PropertyDurometer Hard-nessD3183 Practice for RubberPreparation of Pieces for TestPurposes from Products3.Materials and Manufacture3.1 The seals shall be preformed,and the material shall bevulcanized elastomeric compound using pol
10、ychloroprene asthe only base polymer.4.Physical Requirements4.1 The materials shall conform to the physical propertiesprescribed in Table 1.4.2 In the applicable requirements of Table 1 and the testmethods,all deflections shall be based on the nominal width ofthe seal.5.Dimensions and Permissible Va
11、riations5.1 The size,shape,and dimensional variations shall be asagreed upon by the purchaser and the producer or supplier.6.Workmanship6.1 Seals shall be free of defects in workmanship andmaterials that may affect its serviceability.7.Sampling7.1 A lot shall consist of the quantity for each cross s
12、ectionagreed upon by the purchaser and the producer or supplier.7.2 Samples shall be taken at random from each shipment ofmaterial.If the shipment consists of more than one lot,each lotshall be sampled.1This specification is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials an
13、d is the direct responsibility of Subcommittee D04.34 onPreformed Joint Fillers,Sealers and Sealing Systems.Current edition approved June 1,2011.Published July 2011.Originally approvedin 1967.Last previous edition approved in 1998 as D2628 91(2005).DOI:10.1520/D2628-91R11.2For referenced ASTM standa
14、rds,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright
15、 ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 7.3 A minimum of 9 linear ft(2.8 m)shall constitute onesample for testing purposes.8.Specimen Preparation8.1 Cut or buff all test specimens from the sample ofpreformed seal.Except as otherwise specif
16、ied in the applicablespecifications or test methods,prepare specimens in accor-dance with the requirements of Practice D3183.8.2 Prepare specimens for determining tensile strength andelongation using Die C(Test Methods D412)when possible.Die D may be used when the flat sections of a seal are too smallfor Die C.However,the requirements of Table 1 shall applyregardless of the die used.Carefully perform buffing and keepto a minimum.8.3 Specimens for low temperature and high temperaturerecovery test
